* [Buildroot] [Bug 11121] New: statfs call corrupts memory struct statfs too small
@ 2018-06-28 19:15 bugzilla at busybox.net
2018-06-28 19:33 ` [Buildroot] [Bug 11121] " bugzilla at busybox.net
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: bugzilla at busybox.net @ 2018-06-28 19:15 UTC (permalink / raw)
To: buildroot
https://bugs.busybox.net/show_bug.cgi?id=11121
Bug ID: 11121
Summary: statfs call corrupts memory struct statfs too small
Product: buildroot
Version: unspecified
Hardware: Other
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Other
Assignee: unassigned at buildroot.uclibc.org
Reporter: geoff at infradead.org
CC: buildroot at uclibc.org
Target Milestone: ---
Created attachment 7656
--> https://bugs.busybox.net/attachment.cgi?id=7656&action=edit
statfs test program
It seems there is a mismatch between the struct statfs used by libc and that
used by the arm64 kernel. The call to statfs() writes 120 bytes, but struct
statfs is only 88 bytes. The attached test program shows this.
I experienced seg faults due to stack corruption when calling statfs() with an
automatic struct statfs variable.
Building for arm64.
libuClibc-1.0.30
Using master at revision 751df64eb344eee6a583755de09d3d506ac2fe33.
The output of statfs-test program:
sizeof statfs: 88
sizeof packed: 138
1: 94 94
2: 19 19
3: 2 2
4: 1 1
5: 0 0
6: 0 0
7: 0 0
8: 0 0
9: 0 0
10: 10 10
11: 0 0
12: 0 0
13: 0 0
14: 0 0
15: 0 0
16: 0 0
17: 72 72
18: a5 a5
19: 7 7
20: 0 0
21: 0 0
22: 0 0
23: 0 0
24: 0 0
25: 83 83
26: 80 80
27: 7 7
28: 0 0
29: 0 0
30: 0 0
31: 0 0
32: 0 0
33: 83 83
34: 80 80
35: 7 7
36: 0 0
37: 0 0
38: 0 0
39: 0 0
40: 0 0
41: 72 72
42: a5 a5
43: 7 7
44: 0 0
45: 0 0
46: 0 0
47: 0 0
48: 0 0
49: d9 d9
50: a0 a0
51: 7 7
52: 0 0
53: 0 0
54: 0 0
55: 0 0
56: 0 0
57: 0 0
58: 0 0
59: 0 0
60: 0 0
61: 0 0
62: 0 0
63: 0 0
64: 0 0
65: ff ff
66: 0 0
67: 0 0
68: 0 0
69: 0 0
70: 0 0
71: 0 0
72: 0 0
73: 0 0
74: 10 10
75: 0 0
76: 0 0
77: 0 0
78: 0 0
79: 0 0
80: 0 0
81: 20 20
82: 0 0
83: 0 0
84: 0 0
85: 0 0
86: 0 0
87: 0 0
88: 0 0
89: 0 0
90: 0 0
91: 0 0
92: 0 0
93: 0 0
94: 0 0
95: 0 0
96: 0 0
97: 0 0
98: 0 0
99: 0 0
100: 0 0
101: 0 0
102: 0 0
103: 0 0
104: 0 0
105: 0 0
106: 0 0
107: 0 0
108: 0 0
109: 0 0
110: 0 0
111: 0 0
112: 0 0
113: 0 0
114: 0 0
115: 0 0
116: 0 0
117: 0 0
118: 0 0
119: 0 0
120: 0 0
121: ff cc
122: ff cc
123: ff cc
124: ff cc
125: ff cc
126: ff cc
127: ff cc
128: ff cc
129: ff cc
130: ff cc
131: ff cc
132: ff cc
133: ff cc
134: ff cc
135: ff cc
136: ff cc
137: ff cc
138: ff cc
--
You are receiving this mail because:
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Buildroot] [Bug 11121] statfs call corrupts memory struct statfs too small
2018-06-28 19:15 [Buildroot] [Bug 11121] New: statfs call corrupts memory struct statfs too small bugzilla at busybox.net
@ 2018-06-28 19:33 ` bugzilla at busybox.net
2018-06-28 23:05 ` bugzilla at busybox.net
2018-06-30 19:57 ` bugzilla at busybox.net
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla at busybox.net @ 2018-06-28 19:33 UTC (permalink / raw)
To: buildroot
https://bugs.busybox.net/show_bug.cgi?id=11121
--- Comment #1 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> ---
Thanks for your bug report. However, this doesn't look like a Buildroot bug,
but instead a uClibc-ng bug. Could you report it to uClibc-ng instead ?
--
You are receiving this mail because:
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Buildroot] [Bug 11121] statfs call corrupts memory struct statfs too small
2018-06-28 19:15 [Buildroot] [Bug 11121] New: statfs call corrupts memory struct statfs too small bugzilla at busybox.net
2018-06-28 19:33 ` [Buildroot] [Bug 11121] " bugzilla at busybox.net
@ 2018-06-28 23:05 ` bugzilla at busybox.net
2018-06-30 19:57 ` bugzilla at busybox.net
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla at busybox.net @ 2018-06-28 23:05 UTC (permalink / raw)
To: buildroot
https://bugs.busybox.net/show_bug.cgi?id=11121
--- Comment #2 from Geoff Levand <geoff@infradead.org> ---
I reported the problem on the uclibc-ng ML:
https://mailman.uclibc-ng.org/pipermail/devel/2018-June/001702.html
--
You are receiving this mail because:
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Buildroot] [Bug 11121] statfs call corrupts memory struct statfs too small
2018-06-28 19:15 [Buildroot] [Bug 11121] New: statfs call corrupts memory struct statfs too small bugzilla at busybox.net
2018-06-28 19:33 ` [Buildroot] [Bug 11121] " bugzilla at busybox.net
2018-06-28 23:05 ` bugzilla at busybox.net
@ 2018-06-30 19:57 ` bugzilla at busybox.net
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla at busybox.net @ 2018-06-30 19:57 UTC (permalink / raw)
To: buildroot
https://bugs.busybox.net/show_bug.cgi?id=11121
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |INVALID
Status|NEW |RESOLVED
--- Comment #3 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> ---
Thanks for reporting the bug to upstream uClibc. I'll close the bug here, since
there isn't much we can do at the Buildroot level about this.
--
You are receiving this mail because:
You are on the CC list for the bug.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2018-06-30 19:57 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-06-28 19:15 [Buildroot] [Bug 11121] New: statfs call corrupts memory struct statfs too small bugzilla at busybox.net
2018-06-28 19:33 ` [Buildroot] [Bug 11121] " bugzilla at busybox.net
2018-06-28 23:05 ` bugzilla at busybox.net
2018-06-30 19:57 ` bugzilla at busybox.net
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.